KR20080084134A - Pedestrian protecting stiffener assembly for front end module in vehicle - Google Patents

Abstract

A pedestrian protecting stiffener assembly for a front end module in a vehicle is provided to increase the strength of a stiffener by injection-molding a side bracket through a hydroforming scheme using aluminum and to insert the stiffener into the side bracket. A side bracket(2) includes a pair of bracket bodies and a coupling bracket(5). The bracket bodies are mounted on two side surfaces of a front surface of a carrier. The coupling bracket protrudes from a lower portion of the bracket body so that a stiffener(8) and a bumper beam bracket are coupled to a lower portion of the coupling bracket. The coupling bracket includes a bracket body(5a) and upper and lower flanges(5b,5c). The upper flange is provided with an inner overlap flange(5d). The bracket body is provided with a bolt coupling hole.

Description

Pedestrian protecting stiffener assembly for front end module in vehicle}

1 is a block diagram of a pedestrian protection stiffener assembly of a vehicle front end module according to the present invention

Figure 2 is a front and rear partial perspective view of the pedestrian protection stiffener assembly according to the present invention

3 is a block diagram of a vehicle front end module is coupled to the pedestrian protection stiffener assembly according to the present invention

    <Description of the symbols for the main parts of the drawings>

1 carrier 2 side bracket

3,5a: bracket body 4: bumper beam bracket

5: Fastening bracket 5b, 5c, 8b, 8c: Upper and lower flange

5d: inner overlap flange 5e: bolted hole

7: positioner

7a: guide ball 7b: spring

8: stiffener 8a: stiffener body

8d: outer overlap flange

8e: position groove 9: bumper beam

The present invention relates to a vehicle front end module, and more particularly to a pedestrian protective stiffener assembly of the vehicle front end module.

In general, the front end, the front end of the vehicle, is equipped with headlamps, hood latches, bumpers, radiators, and electric fans. Therefore, all aspects of rigidity and functionality for installing various components must be satisfied. .

The front end is manufactured as a front end module in which each component is pre-installed in the front end and integrated into a single component, thereby improving workability and shortening the number of processes.

Typically, this front end module is equipped with a condenser, a radiator, a cooling fan, and a head lamp through a carrier that forms a front panel in the vehicle body frame. The carrier is mainly made of a hybrid type made of plastic injection molded steel compared to the plastic type.

In addition, the bumper beam is protrudingly fastened using side brackets coupled to both sides of the front surface of the carrier, and a stiffener is protrudingly fastened to the lower portion of the carrier.

At this time, the stiffener is a structure for preventing the pedestrian's knees from entering the underside of the vehicle. The stiffener may be made of steel but is usually manufactured by injection molding of plastic.

However, as the stiffener that blocks the pedestrian's entry into the front lower part of the body is injection molded from plastic material, various disadvantages appear. It brings a lot, the mold manufacturing cost according to the injection molding, and also fastened to the side bracket will bring an increase in the number of assembly and the cost increase due to the mounting (Mounting).

Accordingly, the present invention has been made in view of the above, and injection molding using a hydroforming method using an aluminium material to bond the stiffener to the side bracket mounting the bumper beam together In addition, the stiffeners are fitted to the side brackets to be coupled, thereby increasing the rigidity of the stiffeners, as well as protecting the carrier and simplifying the assembly process.

The present invention for achieving the above object is a condenser, a radiator, a cooling fan and a headlamp, etc., which are mounted to the front part of the vehicle, are combined to form a front panel and a carrier which is fastened to both sides of the front of the carrier and the bumper beam. In the front end module having a side bracket for mounting the,

The side brackets are made of an aluminum-integrated hydroforming method, and a pair of bracket bodies are mounted on both sides of the front surface of the carrier, and the bumper beam brackets and the brackets are coupled to protrude to the bracket bodies and fasten the bumper beams. Consists of a fastening bracket that is bent at the bottom of the body and protruding to extend,

The stiffener that blocks the pedestrian from entering the front lower portion of the body is fastened to the lower portion of the side bracket, characterized in that the bolt is fastened.

The fastening bracket has a bracket body forming a flat surface, and upper and lower flanges having both upper and lower sides of the bracket body bent toward the side brackets, and the upper flange is spaced apart from the bending of the upper flange at intervals. An inner overlap flange bent in a direction is formed, and a bolt fastening hole is formed in the bracket body to allow the bolt to pass therethrough.

In addition, the stiffener is composed of a stiffener body having a length arranged in the width of the side brackets mounted on both sides of the front of the carrier, the upper and lower sides of the stiffener body is bent by the upper and lower flanges, the upper flange An inner outer overlap flange is bent again in the opposite direction to the bending of the flange, and a bolt fastening hole is formed in the stiffener body to allow the bolt to pass therethrough.

And, the inner overlap flange of the fastening bracket is provided with a positioner for holding the position of the stiffener, the positioner is inserted into the hole of the inner overlap flange and the guide ball protrudes, the upper flange and the inner overlap flange to support the guide ball It is characterized by consisting of springs located at intervals between.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a pedestrian protection stiffener assembly of a vehicle front end module according to the present invention, the front end module according to the present invention is a condenser and a radiator and a cooling fan and a head lamp mounted to the front of the vehicle The bumper beam 9 is protruded and fastened to the carrier 1 which is coupled to form a front panel and is manufactured by an integrated hydroforming method on both sides of the front side thereof, and coupled to the side bracket 2. A stiffener (8, Stiffener) is formed by the protruding and extending portion of the lower portion of (2).

Here, the side bracket (2) is manufactured by an integral hydroforming method and is coupled to protrude on the bracket body (3) consisting of a pair of bracket body (3) respectively mounted on both sides of the front surface of the carrier (1) The bumper beam bracket 4 which fastens the bumper beam 9 and the stiffener 8 which blocks the pedestrian from entering the lower portion of the front of the vehicle body are bent downwardly and protruded and extended from the lower portion of the bracket body 3. The bracket 5 is comprised.

In addition, as shown in FIGS. 2A and 2B, the fastening bracket 5 includes a bracket body 5a forming a flat surface, and upper and lower sides of the bracket body 5a are side brackets. Upper and lower flanges 5b and 5c which are bent toward (2) are formed, and the inner flange 5d which is bent in the opposite direction to the bending of the upper flange 5c at intervals is formed on the upper flange 5c. In the bracket body 5a, a bolt fastening hole 5e is formed to penetrate the bolt.

At this time, the bolt fastening hole (5e) is formed in one or more, it is usually formed in a pair spaced from each other, the formation position can also be formed in any position in the bracket body (5a).

In addition, the inner overlap flange 5d of the fastening bracket 5 is provided with a positioner 7, which is inserted into the hole of the inner overlap flange 5d as shown in FIG. 2 (b). It consists of a protruding guide ball 7a and a spring 7b positioned at an interval between the upper flange 5c and the inner overlap flange 5d to support the guide ball 7a.

In addition, the stiffener (8) is made of a stiffener body (8a) having a length arranged in the width of the side bracket (2) mounted on both sides of the front surface of the carrier (1), the top of the stiffener body (8a) The lower both sides are bent by the upper and lower flanges 8b and 8c, and the inner outer overlap flange 8d is bent on the upper flange 8c again in the opposite direction to the bending of the upper flange 8c as shown in FIG. Is formed, and a bolt fastening hole is formed in the stiffener body 8a to allow the bolt to pass therethrough.

In this case, the bolt fastening holes are formed in the same manner as the bolt fastening holes 5e formed in the fastening brackets 5 fastened to each other.

In addition, a position groove 8e of a semispherical cross section is formed in the bottom face of the upper flange 8c of the stiffener 8 so that the ball 7a of the positioner 7 is fitted and seated.

Hereinafter, the operation of the present invention will be described in detail with reference to the accompanying drawings.

The front end module of the present invention is a lower portion of the carrier (1, carrier) which forms a front panel by combining a condenser, a radiator, a cooling fan, and a head lamp to block the pedestrians collided with the front of the vehicle from entering the lower front of the vehicle body. It is characterized in the coupling structure to the stiffener 8 to be fastened to.

That is, when the stiffener 8 is coupled to the side bracket 2 injection-molded by a hydroforming method using an aluminum material fastened to the carrier 1, the stiffener 8 is connected to the side. As the fitting is coupled to the bracket 2 side, the rigidity of the stiffener 8 and the protection of the carrier 1 as well as the assembling process may be more easily performed.

This is according to the fastening structure between the side bracket (2) and the stiffener (8) which is mounted to the front of the carrier (1) while constituting the present invention, that is, as shown in Figure 3, fastened to both sides of the front of the carrier (1) The bumper beam 9 is fastened to the beam bracket 4 of the side bracket 2 and the stiffener 8 is fastened to the fastening bracket 5 of the side bracket 2 at the lower portion thereof.

That is, when the fastening bracket 5 protruding from the side bracket 2 is fitted to be completely received by the stiffener 8, the upper and lower flanges 5b and 5c of the fastening bracket 5 are stiffener 8. It is wrapped by the upper and lower flanges 8b and 8c of the &lt; RTI ID = 0.0 &gt;

As shown in FIG. 3, the bracket body 5a of the fastening bracket 5 is in close contact with the stiffener body 8a of the stiffener 8 according to the coupling structure between the stiffener 8 and the fastening bracket 5. While the lower flange 5b of the fastening bracket 5 is in close contact with the lower flange 8b of the stiffener body 8a, the upper flange 8c of the stiffener body 8a is connected to the fastening bracket 5. This is because the upper flange 5c is held in close contact while being restrained.

That is, in the state where the inner overlap flange 5d bent at the upper flange 5c of the fastening bracket 5 is completely accommodated in the upper flange 8c of the stiffener 8, the upper flange of the stiffener 8 ( As the inner outer overlap flange 8d, which is bent again in the opposite direction to the bending of 8c), is wrapped around the upper flange 5c again, the coupling between the stiffener 8 and the fastening bracket 5 coupled to each other is more stable. This is done solidly.

As described above, the stiffener 8 is coupled to the fastening bracket 5 using bolts and nuts. That is, the bracket body 5a of the fastening bracket 5 coincides with the bolt fastening hole 5e formed therein. When the bolt is penetrated using the bolt fastening hole of the stiffener 8 and the nut is fastened, as shown in FIG. 3, the stiffener 8 of the side bracket 2 mounted to both sides of the front surface of the carrier 1 is shown. It is mounted at the lower part of the bumper beam 9 in width.

In addition, the present invention is more easily assembled between the stiffener 8 and the fastening bracket 5 during the fastening operation of the stiffener 8 as described above, which is shown in Figure 2 (b) fastening bracket (5) It is made through the action of the positioner 7 provided in the inner overlap flange (5d) bent in the upper flange (5c) portion of the).

That is, when the inner overlap flange 5d of the fastening bracket 5 is fitted to the upper flange 8c of the stiffener 8, the ball 7a of the positioner 7 mounted to the inner overlap flange 5d is provided. Position groove 8e formed by the bottom of the upper flange 8c of the stiffener 8 as the force is continuously received by the force of the spring 7b to move to the upper flange 8c portion of the stiffener 8. The ball 7a is inserted.

As shown in FIG. 3, when the ball 7a of the positioner 7 is fitted into the position groove 8e formed by the bottom surface of the upper flange 8c of the stiffener 8, the operator may attach the stiffener 8 and the fastening bracket ( 5) it can be confirmed that the position is matched, and then proceeds with the assembling work of the stiffener 8 and the fastening bracket 5 is made easier and more convenient work.

As described above, according to the present invention, as the stiffener mounted to the bottom of the front end module is fitted into the side bracket mounted to the front of the carrier to prevent pedestrians from entering the front bottom of the vehicle, the welding process is performed at 11 places. It is reduced to two places, which makes the assembly work more convenient.

In addition, according to the present invention, since the stiffener mounted to the bottom of the front end module is fastened more stably and firmly to the carrier through the side bracket, even if the stiffener is impacted, the impact force is hardly transmitted to the carrier and is manufactured by hydroforming. It is absorbed through the side bracket with high stiffness, thereby increasing the overall impact stiffness on the stiffener portion.

In addition, according to the present invention, as the stiffener mounted to the bottom of the front end module is fitted to the side bracket mounted to the front of the carrier so as to prevent the pedestrians from entering the front bottom of the vehicle, the stiffener can be easily attached and attached to each side. Applicability to different pedestrian protection regulations in different countries will be of great benefit.

Claims (6)

A condenser, a radiator, a cooling fan, and a head lamp, which are mounted to the front of the vehicle, are coupled to each other to form a front panel, and a bumper beam 9 that is fastened to both sides of the front surface of the carrier 1. In the front end module having the side bracket (2), The side bracket (2) is made of an aluminum material-integral hydroforming method and is coupled to the bracket body (3) consisting of a pair of bracket body (3) respectively mounted on both sides of the front surface of the carrier (1), protruding from the bracket body (3) And a bumper beam bracket 4 for fastening the bumper beam 9 and a fastening bracket 5 which is bent at the lower part of the bracket body 3 and protrudes and extends. Pedestrian protection stiffener assembly of the front end module for a vehicle, characterized in that the stiffener (8) that blocks the pedestrian from entering the front of the vehicle body is fastened to the bottom bracket 2 of the side bracket (2) to be fastened to the bottom. . The fastening bracket (5) is a bracket body (5a) forming a flat surface, and the upper and lower flanges (5b), both the upper and lower sides of the bracket body (5a) is bent toward the side bracket (2) 5c is formed, and an inner overlap flange 5d bent in a direction opposite to the bending of the upper flange 5c at intervals is formed on the upper flange 5c, and a bolt penetrates the bracket body 5a. Pedestrian protection stiffener assembly of the front end module for a vehicle, characterized in that the bolt fastening hole (5e) is formed. 2. The stiffener body (8a) according to claim 1, wherein the stiffener (8) consists of a stiffener body (8a) having a length arranged in the width of the side bracket (2) mounted on both front sides of the carrier (1). The upper and lower sides of the upper and lower flanges are bent by the upper and lower flanges 8b and 8c, and the upper flange 8c is formed with an inner outer overlap flange 8d that is bent again in the opposite direction to the bending of the upper flange 8c. The stiffener body (8a) is a pedestrian protection stiffener assembly of the front end module for a vehicle, characterized in that the bolt fastening hole is formed so as to pass through. 4. The pedestrian protective stiffener assembly of claim 2 or 3, wherein the bolt fastening holes are formed in a pair spaced apart from each other. The inner overlap flange (5d) of the fastening bracket (5) is provided with a positioner (7) for holding the engagement position of the stiffener (8), the positioner (7) of the inner overlap flange (5d) For a vehicle characterized in that it comprises a guide ball 7a that is inserted into the protrusion and protrudes, and a spring 7b positioned at an interval between the upper flange 5c and the inner overlap flange 5d to support the guide ball 7a. Pedestrian protective stiffener assembly on the front end module. The vehicle front according to claim 5, wherein the guide ball (7a) of the positioner (7) is fitted into a position groove (8e) of a hemispherical cross section formed by the bottom surface of the upper flange (8c) of the stiffener (8). Pedestrian protective stiffener assembly of the end module.

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